The FirstSpear M4 Double 6/12 holds one or two (stacked on top of each other) 30 round 5.56 x 45 magazines with a second pocket beside it for up to four total mags. Large webbing flap and MIL-SPEC elastic webbing provide added retention.

Drastic weight reduction and improved performance can be achieved by utilizing 6/12 pockets on a FirstSpear 6/12 platform.

NOTE: FirstSpear 6/12 pockets are only built for use on FirstSpear platforms with the 6/12 technology